Makefile.inc

   1 #
   2 # Copyright (C) 2004 Christophe Varoqui, <christophe.varoqui@opensvc.com>
   3 #
   4
   5 #
   6 # Allow to force some libraries to be used statically. (Uncomment one of the
   7 # following lines or define the values when calling make.)
   8 #
   9 # WITH_LOCAL_LIBDM      = 1
  10 # WITH_LOCAL_LIBSYSFS   = 1
  11 #
  12 # Uncomment to disable libdmmp support
  13 # ENABLE_LIBDMMP = 0
  14 #
  15 # Uncomment to disable dmevents polling support
  16 # ENABLE_DMEVENTS_POLL = 0
  17
  18 PKGCONFIG       ?= pkg-config
  19
  20 ifeq ($(TOPDIR),)
  21         TOPDIR  = ..
  22 endif
  23
  24 ifndef LIB
  25         ifeq ($(shell test -d /lib64 && echo 1),1)
  26                 LIB=lib64
  27         else
  28                 LIB=lib
  29         endif
  30 endif
  31
  32 ifndef RUN
  33         ifeq ($(shell test -L /var/run -o ! -d /var/run && echo 1),1)
  34                 RUN=run
  35         else
  36                 RUN=var/run
  37         endif
  38 endif
  39
  40 ifndef SYSTEMD
  41         ifeq ($(shell $(PKGCONFIG) --modversion libsystemd >/dev/null 2>&1 && echo 1), 1)
  42                 SYSTEMD = $(shell $(PKGCONFIG) --modversion libsystemd | awk '{print $$1}')
  43         else
  44                 ifeq ($(shell systemctl --version >/dev/null 2>&1 && echo 1), 1)
  45                         SYSTEMD = $(shell systemctl --version 2> /dev/null | \
  46                                 sed -n 's/systemd \([0-9]*\).*/\1/p')
  47                 endif
  48         endif
  49 endif
  50
  51 ifndef SYSTEMDPATH
  52         SYSTEMDPATH=usr/lib
  53 endif
  54
  55 prefix          =
  56 exec_prefix     = $(prefix)
  57 usr_prefix      = $(prefix)
  58 bindir          = $(exec_prefix)/sbin
  59 libudevdir      = $(prefix)/$(SYSTEMDPATH)/udev
  60 udevrulesdir    = $(libudevdir)/rules.d
  61 multipathdir    = $(TOPDIR)/libmultipath
  62 man8dir         = $(prefix)/usr/share/man/man8
  63 man5dir         = $(prefix)/usr/share/man/man5
  64 man3dir         = $(prefix)/usr/share/man/man3
  65 syslibdir       = $(prefix)/$(LIB)
  66 usrlibdir       = $(usr_prefix)/$(LIB)
  67 libdir          = $(prefix)/$(LIB)/multipath
  68 unitdir         = $(prefix)/$(SYSTEMDPATH)/systemd/system
  69 mpathpersistdir = $(TOPDIR)/libmpathpersist
  70 mpathcmddir     = $(TOPDIR)/libmpathcmd
  71 mpathvaliddir   = $(TOPDIR)/libmpathvalid
  72 thirdpartydir   = $(TOPDIR)/third-party
  73 libdmmpdir      = $(TOPDIR)/libdmmp
  74 nvmedir         = $(TOPDIR)/libmultipath/nvme
  75 includedir      = $(prefix)/usr/include
  76 pkgconfdir      = $(usrlibdir)/pkgconfig
  77
  78 GZIP            = gzip -9 -c
  79 RM              = rm -f
  80 LN              = ln -sf
  81 INSTALL_PROGRAM = install
  82
  83 # $(call TEST_CC_OPTION,option,fallback)
  84 # Test if the C compiler supports the option.
  85 # Evaluates to "option" if yes, and "fallback" otherwise.
  86 TEST_CC_OPTION = $(shell \
  87         if echo 'int main(void){return 0;}' | \
  88                 $(CC) -o /dev/null -c -Werror "$(1)" -xc - >/dev/null 2>&1; \
  89         then \
  90                 echo "$(1)"; \
  91         else \
  92                 echo "$(2)"; \
  93         fi)
  94
  95 STACKPROT := $(call TEST_CC_OPTION,-fstack-protector-strong,-fstack-protector)
  96 ERROR_DISCARDED_QUALIFIERS := $(call TEST_CC_OPTION,-Werror=discarded-qualifiers,)
  97 WNOCLOBBERED := $(call TEST_CC_OPTION,-Wno-clobbered -Wno-error=clobbered,)
  98 WFORMATOVERFLOW := $(call TEST_CC_OPTION,-Wformat-overflow=2,)
  99
 100 OPTFLAGS        := -O2 -g $(STACKPROT) --param=ssp-buffer-size=4
 101 WARNFLAGS       := -Werror -Wall -Wextra -Wformat=2 $(WFORMATOVERFLOW) -Werror=implicit-int \
 102                   -Werror=implicit-function-declaration -Werror=format-security \
 103                   $(WNOCLOBBERED) -Werror=cast-qual $(ERROR_DISCARDED_QUALIFIERS)
 104 CPPFLAGS        := -Wp,-D_FORTIFY_SOURCE=2
 105 CFLAGS          := --std=gnu99 $(CFLAGS) $(OPTFLAGS) $(WARNFLAGS) -pipe \
 106                    -DBIN_DIR=\"$(bindir)\" -DLIB_STRING=\"${LIB}\" -DRUN_DIR=\"${RUN}\" \
 107                    -MMD -MP
 108 BIN_CFLAGS      = -fPIE -DPIE
 109 LIB_CFLAGS      = -fPIC
 110 SHARED_FLAGS    = -shared
 111 LDFLAGS         := $(LDFLAGS) -Wl,-z,relro -Wl,-z,now -Wl,-z,defs
 112 BIN_LDFLAGS     = -pie
 113
 114 # Check whether a function with name $1 has been declared in header file $2.
 115 check_func = $(shell \
 116         if grep -Eq "^[^[:blank:]]+[[:blank:]]+$1[[:blank:]]*(.*)*" "$2"; then \
 117                 found=1; \
 118                 status="yes"; \
 119         else \
 120                 found=0; \
 121                 status="no"; \
 122         fi; \
 123         echo 1>&2 "Checking for $1 in $2 ... $$status"; \
 124         echo "$$found" \
 125         )
 126
 127 # Checker whether a file with name $1 exists
 128 check_file = $(shell \
 129         if [ -f "$1" ]; then \
 130                 found=1; \
 131                 status="yes"; \
 132         else \
 133                 found=0; \
 134                 status="no"; \
 135         fi; \
 136         echo 1>&2 "Checking if $1 exists ... $$status"; \
 137         echo "$$found" \
 138         )
 139
 140 %.o:    %.c
 141         @echo building $@ because of $?
 142         $(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<